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Using Radar Interferometric Satellite Data for Groundwater Management in the Arno
River Basin
Bernardo Mazzanti, Giovanni MontiniArno River Basin Authority (I)
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4000+ points in the GWB perimeter
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4000+ points in the GWB perimeter
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4000+ points in the GWB perimeter
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4000+ points in the GWB perimeter
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4.000+ points in the GWB perimeter
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4000+ points in the GWB perimeter
Goal
Methods
Data
Analisys of correlation between superficial terrain deformation (at regional scale) and water exploitation in alluvial groundwater
Impact evaluation of anthropic pressures on water bodies
Persistent Scatterers from radar interferometric data(ENVISAT 2003-2010)
Water balance of 17 aquifers in the Arno river basin
Updated CORINE land cover map at high resolution (1:10.000)
Preliminary deformation analysis at regional scale
Detailed analysis of subsidence phenomena for each water body
Stratigraphic data in 4000+ points in the GWB perimeter
Index #1Mean deformation velocity evaluated on every GWB
LowVavg > -2 mm/y
Medium-2 < Vavg > -5 mm/y
HighVavg < -5 mm/y
Index #2 % active PS in populated areas
Low<= 10%
Medium10% - 30%
High> 30%
Index #3Ratio between avg. deformation velocity in populated areas and avg. deformation velocity in the
whole GWBLow
< 1.05Medium
1.05 - 1.15High
> 1.15
Highlighting impact on anthropic activities & water abstraction as a driver for subsidenceSpatial comparison of Index 1/2/3
Mid-term exploitation evaluationGWB critical condition classificationfrom water balance and quality monitoring
low
medium
high
Highlighting most affected areasStatistical analysis of deformations according to land cover type
Index evaluation on a single GWB
Conclusions
Useful characterization of subsidence phenomena
Interferometric data analysis
Helpful for spatial description and impact evaluation
Integration with geological and land cover data
High correlation with over-exploited grundwater bodies
Comparison with water abstraction data